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The heating and ventilation projects of the buildings: what are the basic methods for pipe laying?

Date:2017-03-17

① The pipeline used for transmitting inflammable and combustible gas should not be laid with other pipelines in the same ditch.
 

② Heat preservation must be carried out to the cold and hot water pipelines and steam pipelines
 

③ The distance from the outer wall (or the outside surface of the insulating layer)of the pipeline to the wall or the wall of the ditch should be no less than 0.15 m, to the pillar and the beam should be 0.05m. The distance between different outer walls of pipelines (or the outside surface of insulating layer) should be 0.1~0.15m.
 

④ The distance between the outer wall of the air channel and the wall should be better at 0.2~0.3m. The distance varies in the same way with the size of the fracture surface.
 

⑤When the cold and hot water pipelines are laid together with the water supply and drain pipelines, the cold and hot water pipeline should be laid on top of the water supply and drain pipeline and the water supply pipes should be put on top of the drain pipes
 

⑥ The size of the holes for the air channel and water pipeline going through the floors and walls should be as follows: the size of the hole for the pipeline not keeping warm is the sum of the size of air duct and 100mm and for the pipeline with thermal preservation is the sum of the size of the air duct and 150mm. the hole of the pipeline not keeping warm is usually 2 times larger than the normal pipe diameter. While for the thermal preservation pipeline, the hole is the pipe diameter adding 150mm

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